JPH11172700A - Concrete structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To assemble tension material and shore material between both concrete boards and facilitate adjustment between both the concrete board by integrally providing a vertical tie plate having a number of holes on opposed face of each board of a pair of opposed risen precast concrete by spacing an interval on a foundation. SOLUTION: Vertical tie plates 5, 6 having a number of holes 4 are integrally provided at a position upward of the sleeper material 3 of an inner face in which a front board is vertical, a rear board is slightly frontward downward inclined and risen precast concrete boards 1, 2 are opposed on the upper face of a pair of the horizontal precast concrete sleeper material 3 being a foundation. After the hooks of the two screw rod edge of a turnbuckle 7 are fitted to the holes 4 of the tie plates 5, 6 while an interval between the boards 1, 2 and an inclined angle thereof are adjusted and the opening parts of both right and left sides are closed, concrete is placed in an inner space to obtain a gravitational retaining wall. Thereby work assembling tension material and shore material between the concrete boards 1, 2 and adjustment of the interval between the concrete boards 1, 2 and the inclined angle thereof are made very easy.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a concrete structure in which a precast concrete slab is assembled as a formwork, concrete is cast therein, a structure is constructed, and the precast slab is used as a main structural material as it is. The concrete structure according to the present invention is not limited to a gravity-type retaining wall, but may be any other retaining wall (for example, a semi-gravity-type retaining wall, a leaning-type retaining wall, a cantilever-type retaining wall, a buttress-type retaining wall, and a supporting wall-type). (Retaining wall, U-shaped retaining wall, box-shaped retaining wall, inverted Y-shaped retaining wall, etc.), concrete piers, abutments, culverts, etc. on expressways, etc. Can be used in places.

[0002]

2. Description of the Related Art In Japanese Patent Publication No. 7-86237, which has already been proposed by the present applicant, a plurality of anchors are provided in advance on the inner surface of a facing concrete slab, and the positions and angles of both concrete slabs are determined by a ruler. After that, a substantially horizontal tensile member is welded between the opposite anchors, or a vertical extension member is welded between the anchor on the concrete pillow and the concrete plate anchor inclined inward. doing. However, in such a case, it takes time to adjust the interval and angle of the concrete slabs, and when a reinforcing bar is assembled inside, it is likely to be difficult to arrange a tension member or a tension member between the reinforcing bars.

[0003]

SUMMARY OF THE INVENTION An object of the present invention is to make it possible to easily incorporate a tension member or a strut between the concrete slabs and to easily adjust the interval and angle between the concrete slabs. The purpose is.

[0004]

SUMMARY OF THE INVENTION According to the present invention, a pair of slabs of precast concrete is erected at intervals on a foundation, and each slab is provided with a plurality of holes in opposing surfaces. A concrete structure characterized in that a band plate is integrally provided, a hole of one band plate is connected to a hole of the other band plate by a turnbuckle, and concrete is filled inside.

According to a second aspect of the present invention, a pair of slabs of precast concrete are erected oppositely on a foundation at an interval,
At least a longitudinal strip having a large number of holes is integrally provided on the inner surface of the plate on the inwardly inclined side, and a strip having a large number of holes is integrally provided on a foundation substantially orthogonal to the plate. Connect the hole of the strip and the hole of the other strip with a turnbuckle,
It is a concrete structure characterized by being filled with concrete inside.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference numerals 1 and 2 in FIG. 1 both denote rectangular precast concrete slabs, which are provided on the upper surface of a pair of horizontal precast concrete pillows 3 as a foundation (left side in FIG. 1).
The plate 1 is vertically supported, and the subsequent plate 2 is supported by a ruler (not shown) so as to be slightly inclined forward and downward.
Vertical steel strips 5 and 6 (FIG. 2) having a number of holes 4 are integrally provided at positions on the opposing inner surfaces of the plates 1 and 2 above the pillow material 3. 5 and 6 are connected by turnbuckles 7, 8 and 9.

For example, as shown in FIG. 3, a turnbuckle 7 is a screw cylinder 13 having a right screw hole 11 and a left screw hole 12.
(Main body) and screw rods 14 and 15 screwed into the respective screw holes. Each of the screw rods 14 and 15 has, for example, a semicircular hook 16 (FIG. , 6 are fitted in the holes 4. Fig. 3 (b) instead of hook 16
By adopting the S-shaped hook 16a as described above, it is also possible to use a strut. The strip 6 in FIG.
The angle 18 is welded to the reinforcing bar 17 in the plate 2.

The pillow material 3 has two projections 19 on the front and rear upper surfaces, respectively.
To 22 are integrally provided to hold the lower edges of the plates 1 and 2. On the upper surface between the front and rear protrusions, a band plate 23 having a large number of holes 4 like the band plates 5 and 6 stands up in a posture extending forward and backward, and the band plates 6 and 23 are connected by a turnbuckle 24 descending forward. Have been. The turnbuckle 24 also has the same structure (including the connection structure) as the turnbuckle 7 described in FIG. When flat foundation concrete is adopted without using the pillow material 3, an angle is previously welded to the internal rebar so that the band plate 23 projects at a predetermined location.

The plates 1 and 2 are erected on at least two pillows 3 spaced apart from each other, and the intervals and angles of the plates 1 and 2 are set by turnbuckles 7 to 9 and 24, and the front side of FIG. After closing the opening on the opposite side with plywood or other suitable means, concrete is poured into the internal space to obtain a gravity-type retaining wall. If the joints between the hooks 16 and 16a and the holes 4 are welded each time the intervals and angles of the plates 1 and 2 are set during the process of setting, the finishing accuracy is improved.

[0010]

According to the first aspect of the present invention, it is extremely easy to adjust the interval between the plates 1 and 2 and the angle of inclination, and when the reinforcing bar is assembled in the space between the plates, the reinforcing bar is turned through the reinforcing bar. The buckles 7 to 9 can be easily set and operated. According to the second aspect of the present invention, the angle of the plate 2 can be easily adjusted.

[Brief description of the drawings]

FIG. 1 is a schematic side view.

FIG. 2 is an inner perspective view of the plate.

FIG. 3 is a partial sectional view taken along the line III-III of FIG. 1;

[Explanation of symbols]

 1st and 2nd edition 3 Pillow material (basic) 4 holes 5, 6, 23 Strips 7, 8, 9, 24 Turnbuckle

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Masami Hirose 4-6-7, Tsutsujigaoka Kita, Mita City, Hyogo Prefecture (72) Inventor Hiroyuki Okada 2-7-4 Minamihorie, Nishi-ku, Osaka-shi, Osaka Inside Kobayashi Sangyo Co., Ltd.

Claims (2)

[Claims] 1. A pair of precast concrete plates are erected on a foundation at a distance from each other, and a vertical strip having a large number of holes is integrally provided on opposing surfaces of each plate. A concrete structure, characterized in that the hole of (1) and the hole of the other strip are connected by a turnbuckle, and the inside is filled with concrete. 2. A pair of precast concrete slabs are erected on a foundation at a distance from each other, and a longitudinal strip having a number of holes is provided integrally on at least the inner surface of the slab on the inwardly inclined side. A strip having a large number of holes was integrally provided on a foundation substantially orthogonal to the above-mentioned plate, and the holes of one strip and the holes of the other strip were connected with a turnbuckle, and the inside was filled with concrete. A concrete structure, characterized in that: